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kong.nginx

Nginx information module.

A set of functions for retrieving Nginx-specific implementation details and meta information.

kong.nginx.get_subsystem()

Returns the current Nginx subsystem this function is called from. Can be one of "http" or "stream".

Phases

• any

Returns

• string: Subsystem, either "http" or "stream".

Usage

kong.nginx.get_subsystem() -- "http"

kong.nginx.get_statistics()

Returns various connection and request metrics exposed by Nginx, similar to those reported by the ngx_http_stub_status_module.

The following fields are included in the returned table:

• connections_active - the current number of active client connections including connections_waiting.
• connections_reading - the current number of connections where nginx is reading the request header.
• connections_writing - the current number of connections where nginx is writing the response back to the client.
• connections_waiting - the current number of idle client connections waiting for a request.
• connections_accepted - the total number of accepted client connections.
• connections_handled - the total number of handled connections. Same as connections_accepted unless some resource limits have been reached (for example, the worker_connections limit).
• total_requests - the total number of client requests.

Returns

• table: Nginx connections and requests statistics

Usage

local nginx_statistics = kong.nginx.get_statistics()